Using the frequency table and the probability concept, it is found that there is a 0.5581 = 55.81% probability that the waiting time is at least 12 minutes or between 8 and 15 minutes.

A probability is the number of desired outcomes divided by the number of total outcomes.
In this problem, the frequency table gives these numbers of outcomes.

At least 12 minutes or between 8 and 15 minutes is equivalent to at least 8 minutes, thus at least 8 minutes is our desired outcome.

There are 9 + 10 + 12 + 4 + 4 + 2 + 2 = 43 customers.
Of those, 24 spent at least 8 minutes.

Thus, the probability is:

$p = \frac{24}{43} = 0.5581$

0.5581 = 55.81% probability that the waiting time is at least 12 minutes or between 8 and 15 minutes.

A similar problem is given at brainly.com/question/15536019

8 0

3 years ago

Which is equivalent to 3log(x) + 4log(y)? A) log(12xy) B) log(x3 y4) C) log( 3x 4y ) D) log( x3 y4 )

jok3333 [9.3K]

Answer:

logx^3 y^4

Step-by-step explanation:

3 logx + 4 logy

We know that a log b = log b^a

logx^3 + logy^4

We also know that loga + log b =log (ab)

logx^3 y^4

4 0

3 years ago

ed read a total of 30 books over 6 months. If ed has read 45 books so far, how many months has he been with his book club? solve

barxatty [35]

30 books = 6 months

In 1 month 30/6= 5

He read 5 books in one month

So, he read 45 books

45/5= 9

He read 45 books/9 months

6 0

4 years ago